Engraving-machine.



G. T. SUMMERS. ENGRAVING MACHINE.

APPLIOATION IIL'ED AUG. 19, 1909.

Patented May 17, 1910.

alto (Map mmwsw B. GRAHAM CO1.FHOT-UYHOERAFHERS.WASHINGYAM n L ArneGEORGE 'rHoMAs SUMMERS, or nUssELLvrLL KENTUCKY.

ENGRAVING-MACI-IINE.

Specification of Letters Patent.

Application filed August 19, 1909.

Patented May 1'7, 1910.

Serial No. 513,659.

To all whom it may concern:

Be it known that I, GEORGE T. SUMMERs, a citizen of the United States,residing at Russellville, in the county of Logan and State of Kentucky,have invented certain new and useful Improvements in Engraving-Machines, of which the following is a specification.

My invention is an engraving machine of the pantograph type, in whichthe engraving needle depends for its movement upon the movement of atracing-style upon a form or templet, through a system of movementreproducing levers, and my object is to provide a novel adjustable leversystem so mounted as to be capable of movement entirely out of theoperators way when clamping the templet and Work in position.

Another object is to provide novel, adj ustable templet and work clamps.

Other objects, and the advantages, of my present invention will beapparent from the following description, reference being had to theaccompanying drawing, in which- Figure 1 is a plan view of my improvedmachine; Fig. 2 is a cross section therethrough on line 2-2 of Fig. 1,and Fig. 3 is a similar view on line 3-3 of Fig. 1.

In accordance with my invention I provide an open rectangular framewhich may be supported by legs 10 depending from the corners thereof,and which comprises sides 11, 12, 13 and 14, and a cross bar 15connecting sides 12 and 14 and parallel with sides 11 and 13. Parallelwork clamping bars 16 and 17 are arranged to extend upon the frame side11 and cross bar 15, parallel with the side 12, and adjacent the same,bar 17 being pivotally connected at its inner end to a connecting bar 18having a longitudinal series of openings 19, with a selected one ofwhich the inner end of bar 16 may be c0upled by means of a bolt 20. Thebars 16 and 17 extend outwardly beyond the frame side 11, and areconnected at their outer ends by an adjusting screw 21, and said barsare held upon the frame by means of bars 22 and 23 arranged across thesame respectively above the frame bars 11 and 15, bars 22 and 23 havingbolts 24 transversely through their ends, provided with lower hookedends to engage said frame bars, and upper threaded ends for thereception of winged nuts 25.

The templet clamp comprises a pair of parallel jaw members 26 and 27connected adjacent their ends by transverse adjusting screws 28, andextending the entire length of frame side 14, the member 26 havingtransverse bolts 29 at its ends, similar to the bolts 24 of bars 22 and23, to engage the frame sides 11 and 13.

Secured by its vertical leaf to the frame side 12 adjacent frame side11, is a hinge 30, to the upper horizontal leaf of which is pivotallyconnected the rear end of the guide arm 31, which guide arm extendssubstantially parallel with frame side 11 and is pivotally connected atits forward end to one end of the tracer arm 32 extending parallel abovethe templet clamp and at right angles to said guide arm 31. Pivotallyconnected to, and extending angularly from, the rear pivot of the guidearm 31 is a second short guide arm 33. The engraving arm 34 is pivotallyconnected at its ends to sleeves 35 and 36, re spectively, fitting 011the short guide arm 33 and the tracer arm 32, and extends parallel withthe guide arm 31. Thumb nuts 37 tapped through sleeves 35 and 36, serveto clamp the engraving arm 34 in selected adjustmentwith respect toguide arm 31. The tracer arm 32 carries at its free end a tracing pin38, while the engraving tool is secured by a thumb nut 39 through asleeve 40 slidably arranged on the engraving and ada ted to be securedby a thumb nut 41. Thus 'rom the foregoing I am able to readily andquickly adjust or remove any of the parts, and to raise the arms as awhole, by means of hinge 30.

I claim:

1. In a device of the character described, a supporting frame, a worksupport comprising parallel clamping bars, an adjustable pivotalconnection at one end of said bars, an adjustable screw connection attheir opposite ends, and means detachably engaging portions of saidframe to removably said frame to removably hold said clamp in clamp saidWork support thereon in selected selected position. 10 position. Intestlmony whereof I afiix my signature,

2. Ina device of the character described, in presence of two Witnesses.a supporting frame, a clamp thereon com- GEORGE THOMAS SUMMERS. prisingparallel clamping bars and means Witnesses: connecting the same forrelative movement, GEO. T. CLARK,

and means detachably engaging portions of WESLEY VIoK PERRY.

